HD 118508

The issue of HD 118508 is a topic that has generated great interest and controversy in recent times. With different approaches and perspectives, HD 118508 has been the subject of debate and research in various areas of knowledge. From its impact on society to its implications at the individual level, HD 118508 has captured the attention of academics, specialists and ordinary people. In this article, we will explore different aspects related to HD 118508, analyzing its relevance and unraveling its possible consequences. Additionally, we will examine how HD 118508 has shaped and will continue to shape the current landscape, offering a comprehensive view of this important topic.

HD 118508
Observation data
Epoch J2000      Equinox J2000
Constellation Boötes[1]
Right ascension 13h 36m 59.08233s[2]
Declination +24° 36′ 47.8687″[2]
Apparent magnitude (V) 5.8[3]
Characteristics
Evolutionary stage AGB[4]
Spectral type M2III[5]
U−B color index +1.85[6]
B−V color index +1.58[6]
Variable type suspected[7]
Astrometry
Radial velocity (Rv)−35.69±0.18[3] km/s
Proper motion (μ) RA: −26.654[2] mas/yr
Dec.: −2.803[2] mas/yr
Parallax (π)5.9122±0.0860 mas[2]
Distance552 ± 8 ly
(169 ± 2 pc)
Absolute magnitude (MV)−0.431[8]
Details
Mass1.1[9] M☉
Radius49[10] R☉
Luminosity324[11] L☉
Surface gravity (log g)1.04[9] cgs
Temperature3,594[9] K
Metallicity +0.44[9] dex
Other designations
BD+25 2652, FK5 3085, HD 118508, HIP 66417, HR 5123, SAO 82905, NSV 6342
Database references
SIMBADdata

HD 118508 is a suspected variable star in the northern constellation of Boötes. Its apparent magnitude may vary with an amplitude of 0.04, discovered during a search for small-amplitude red variables.[7] It is a red giant about 552 light years away.

References

  1. ^ Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015.
  2. ^ a b c d e Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  3. ^ a b Famaey, B.; et al. (2005), "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters", Astronomy and Astrophysics, 430: 165–186, arXiv:astro-ph/0409579, Bibcode:2005A&A...430..165F, doi:10.1051/0004-6361:20041272, S2CID 17804304
  4. ^ Eggen, Olin J. (1992), "Asymptotic Giant Branch Stars Near the Sun", The Astronomical Journal, 104: 275, Bibcode:1992AJ....104..275E, doi:10.1086/116239
  5. ^ Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x, S2CID 14878976
  6. ^ a b Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data. SIMBAD, Bibcode:1986EgUBV........0M
  7. ^ a b Percy, John R.; Au, Winnie (November 1994), "APT Observations of Small-Amplitude Red Variables", Information Bulletin on Variable Stars, 4114 (4114): 1, Bibcode:1994IBVS.4114....1P
  8. ^ Gontcharov, G. A. (2017), "VizieR Online Data Catalog: Tycho-2 red giant branch and carbon stars (Gontcharov, 2011)", VizieR On-line Data Catalog, Bibcode:2017yCat..90370769G
  9. ^ a b c d Anders, F.; Khalatyan, A.; Chiappini, C.; Queiroz, A. B.; Santiago, B. X.; Jordi, C.; Girardi, L.; Brown, A. G. A.; Matijevič, G.; Monari, G.; Cantat-Gaudin, T.; Weiler, M.; Khan, S.; Miglio, A.; Carrillo, I.; Romero-Gómez, M.; Minchev, I.; De Jong, R. S.; Antoja, T.; Ramos, P.; Steinmetz, M.; Enke, H. (2019), "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18", Astronomy and Astrophysics, 628: A94, arXiv:1904.11302, Bibcode:2019A&A...628A..94A, doi:10.1051/0004-6361/201935765, S2CID 131780028
  10. ^ Stassun K.G.; et al. (October 2019), "The revised TESS Input Catalog and Candidate Target List", The Astronomical Journal, 158 (4): 138, arXiv:1905.10694, Bibcode:2019AJ....158..138S, doi:10.3847/1538-3881/ab3467, S2CID 166227927
  11. ^ McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–57, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x, S2CID 118665352


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